Average Noise
The PSU’s average noise output is exceptionally low. Look at the huge difference between the new and the previous model!
Fan Noise & Speed Maps @ 28-32 °C – 115V
The fan’s passive mode doesn’t last long, but there’s no need, as it starts to operate at low speeds, where its noise output is minimal.
Fan Noise & Speed Maps @ 28-32 °C – 230V
The 230V fan speed profile is identical to the 115V one, with slightly increased passive operation.
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The PowerZone has relatively loud transformer noise, even in standby. You can hear it from the next room. Otherwise, it’s electrically quiet — no coil whine or other weird stuff — but the base hum is quite loud. What about this one?
Can you recommend a power supply that’s completely silent, even in standby? I’ve tested a few and ended up sticking with the PowerZone 2 because it’s a good all-rounder and gets a lot of things right. But that low hum or faint squeal drives me crazy. Every morning I wake up thinking, “Damn, I forgot to switch off the power strip again before going to bed
I have almost gotten Be Quiet Power Zone 2 750 W. I actually have it pending, right now I am considering Pure Power 13 M, as judging by tests it looks quite good.
I returned Thermaltake toughpower due to loud fans even at idle.
Right now I am running Corsair MN750X 750 W and I would appreciate quieter fans. But it is not bad. Also I had not experienced any coil whine, even when trying out uncapped games at up to 800 FPS. But my setup hardly needs 300 to 350 W at max, and does not really strain the PSU.
the Pure Power 13M line is really good. I would go with one of its members.